ZIARANI, G. M.; RAHIMIFARD, M.; NOURI, F.; BADIEI, A. Green one-pot, four-component synthesis of spiro[indoline-3,4′-pyrano[2,3-c]pyrazole] derivatives using amino-functionalized nanoporous silica SBA-15 under solvent-free conditions. Journal of the Serbian Chemical Society, Belgrade, Serbia, v. 80, n. 10, p. 1265–1272, 2015. DOI: 10.2298/JSC140930045M. Disponível em: https://www.shd-pub.org.rs/index.php/JSCS/article/view/JSCS4794. Acesso em: 4 may. 2024.